Car-door lock



(No Model.)`

L. GOBURN.

Patented Aug.

. GAR DOOR LOCK.

"lill f iw' nllf/ vv A 1 UNITE STATES PATENT Grinch.

' LEMUEL COBURN, OF HOLYOKE, MASSACHUSETTS.

CAR-DOOR LOCK.

SPECIFICATION forming part of Letters Patent Nq. 45,414, dated August25, 1891.

Application filedDecember 29, 189D. Serial No. 376,007. (No model.)

To all whom it may concern.:

Be it known that LLEMUEL COBURN, a citizen of the United States,residing at Holyoke, in the county of Hampden and State ofMassachusetts,have invented new and useful lmprovements in Locks forCar-Doors, of which the following is a specification.

This invention relates to locks for car-doors, the object of theinvention being to provide a lock which is of the most simpleconstruction and of the utmost efficiency for all the purposes required;and the invention consists in the construction and combination orarrangement of parts, all substantially as will hereinafter more fullyappear, and be set forth in the claims.

Reference is to be had to the accompanying drawings, in which theconstruction and application of the improved car-door lock isillustrated, Figure l being a sectional and perspective view verticallyof a portion of the sliding car-door comprising the door-lock, thelatter being shown as in its locking or engaging position with the jambof the doorway. Fig. 2 is a view in horizontal section of theabove-named parts. Fig. 3 is a front view of the lock, and Fig. 4 is aninner or rear view of the same.

In the drawings, A represents a portionof the side of the car at thejamb of the' doorway, andB indicates the portion of the door which, whenthe same is closed,lies over and opposite the jamb of the doorway.

C represents the car-door lock as a whole, and which will now bedescribed as to its composition and details of construction.

a represents a casting forming a bushing, the same forming the boundaryfor the slot h, which is open from'the front to the rear of the saidcasting, and the latter is provided with the flange d around its outerborder. The said casting is to be inserted with its slot verticallywithin a narrow mortise through the door, and the screws c, passingthrough the holes therefor in the said flange d, secure the castingwithin the door, all as clearly shown.

j represents the locking-dog of the device, the same being of a formmore or less nearly that of a quadrant, and is pivoted at its heel, asat g, within the said bushing-castlng, so

that the toe portion 7L will, when the dog is in its engaging position,as shown inFigs. l and 2, lie and project within the inner face of thedoor and close alongside the edge of thejamb of the doorway, when thedoor is closed, and constituting an impediment to the sliding movementof the door. The toe portion h exerts a preponderating action, so thatwhen the dog is swung into the engaging p0- sition, as shown,the samewill normally so remain, for the weight of the toe portion h a littlemore than counterbalances the portions of the dog which are at the otherside of the pivot. The dog is provided with a ring-eye 1I, which ispreferably cast therewith and projects forwardly from the forward edgeof the dog, and there is alongside of the said ring-eye t' and formed onor attached to the front of the bushing=casting another ringeye jOpposite but centrally coinciding with the said ring-eye i. Saidring-eyes constitute simple and convenient members for the engagementtherewith of the loop or wire which receives the lock-seal l. isprovided at it front edge portion with the ilange m, which forms a stopfor the inward swing of the dog, and also substantially closes andconceals slot b in the bushing-casting when the dog is in its closingposition.

'When the ring-eyes t' andy' are not tied by the seal cord or loop orotherwise restrained, the car-door is most readily unlocked by simplygrasping the ring-eye t' and swinging the dog so that the toe portion hthereof is entirely forward of the inner face of the cardoor,the forwardportion of the dog, of course, then being seen as a projection outwardlyfrom the front of the door.

Having now described my invention, what I clairn,and desire to secure byLetters Patent,

l. A lock for a car-door, consisting, in coinbination, of abushing-casting to be set into the door and having a slot from the frontto the rear thereof, and the dog f, of substantially a quadrant form,pivoted at its heel at casting and formed with the preponderating toe h,substantially as and for the purpose described.

2. A lock for a car-door,consisting,in comthe front and lower portion ofthe said bushing- The engaging-dogf IOO bination,of a bushing-castinghaving the slot extending ring eye 17, substantially as deb, ange d, andthe ring-eye j, substantially scribed and shown. as described, andtheengaging-dog f, pivoted at g Within said slotted Casting and providedLEMUEL COBURN' with the preponderating toe h, and having lvitnesses:therefrom an upwardly and forwardly ourv- H. A. CHAPIN,

ing contour and provided with the' forwardly- XVM. S. BELLOWS.

